Just in time for the Discovery Channel's Shark Week, put your shark smarts to the test. Answer true-or-false questions to see how much you know about the more than 500 species of this majestic animal in the world. Take the quiz »

When Debbie Salamone was mauled by a shark 10 years ago, she vowed to eat shark steak on every anniversary of the attack. But as she learned more about these creatures, she discovered a new purpose for her life: advocating for them. Her inspiring story »

What is it like to be a shark attack survivor who now fights for shark conservation? Join @pewenvironment at 2 p.m. ET tomorrow, Friday, Aug. 15, for a live Twitter chat to ask shark attack survivor Paul de Gelder (@pauldegelder) about the work he does to keep the ocean full of sharks.Use #PewSharks to join in »

Action Alert

Take action: Urge President Obama to protect crucial shark habitats by expanding and fully protecting the Pacific Remote Islands.Sign the petition for sharks »